How to make a flat open-square origami box (page 11)

 

19. Repeat the steps #6-14 to the 3rd corner.   Prepare to repeat the steps #6-14 to the 4th corner.

20. Repeat the steps #6-14 to the 4th corner.   Prepare to rotate the origami box model by 45 degrees.

 

 

 

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